Preheat oven to 325 degrees F (165 degrees C). Grease and flour a 10-inch Bundt pan or tube cake pan. Sprinkle the walnuts evenly in the bottom of the prepared pan.,Place the cake mix, pudding mix, 1/2 cup water, vegetable oil, eggs, and 1/2 cup whiskey into a mixing bowl, and beat until well blended with an electric mixer, about 2 minutes. Pour the batter over the nuts in the pan.,Bake in the preheated oven until the cake is set and the top springs back when pushed slightly, about 1 hour. When the cake is completely cool, run a paring knife between the cake and the edge of the pan. Hold the cake pan on its side and gently tap the sides of the pan against the counter to loosen it. Cover the cake pan with a plate or cooling rack, and invert it to tip the cake out of the pan and onto the plate. Poke holes all over the top of the cake with a toothpick.,______